package com.ychen.core.service;

import com.ychen.core.domain.CourseEntity;

import java.util.List;

/**
 * @author chenyuliao
 * @version 1.0
 * @description
 * @date 2020/11/26 22:15
 */
public interface HelloService {
    String helle = "haha ";

    void sayHello();

}
